71321LA25PFI8

Memory IC Overview

The Renesas Electronics Corporation 71321LA25PFI8 is a high-speed, asynchronous dual-port static random-access memory (SRAM) with an internal interrupt logic designed for interprocessor communications. It features a storage capacity of 16 kbit organized as 2K x 8 bits. The device operates within a voltage range of 4.5 V to 5.5 V and supports a maximum access time of 25 ns. It is housed in a 64-pin Thin Quad Flat Package (TQFP) suitable for surface-mount technology. The component functions reliably across an industrial temperature range from -40°C to +85°C.

Memory IC Feature Summary

• Dual-port architecture enabling simultaneous independent access by two processors without external arbitration logic.
• Integrated interrupt logic facilitates efficient interprocessor communication and status signaling.
• Automatic power-down mode controlled by chip enable inputs to minimize standby power consumption.

Memory IC Applications

• Interprocessor communication links in multi-core or distributed processing systems.
• Master dual-port RAM configuration paired with slave devices for expanded word width systems.
• High-speed data buffering between microprocessors and peripheral interfaces.

Memory IC Procurement Notes

Verify the specific package marking and date code against official Renesas documentation to ensure authenticity. Confirm that the supply chain source provides valid traceability records. Check for RoHS compliance status as indicated in current datasheets. Ensure handling procedures account for moisture sensitivity level requirements during storage and assembly.

Memory IC Selection Notes

Select this component when a standalone 8-bit dual-port SRAM with integrated interrupt capabilities is required. It serves as a master device in systems needing 16-bit or wider word widths when combined with compatible slave units. Consider the 25 ns access speed and 5V operation limits relative to system timing constraints and power budgets.

Memory IC Part Context

This part belongs to the 71321/71421 family of dual-port SRAMs. The 71321 series acts as the master unit, while the 71421 series serves as the slave. Together, they allow full-speed, error-free operation in systems requiring more than 8-bit word widths without additional discrete logic. This specific variant includes interrupt logic for enhanced control.

Memory IC Replacement Considerations

The IDT71321LA25PFI8 is a confirmed equivalent part number under the Integrated Device Technology brand, which is now part of Renesas. Verify pinout compatibility and electrical specifications before substitution.